Valve



i April 26, 1938. M D BELLINGERv 2,115,247

VALVE Filed July 22, 1936 vlamented Apr. 26, 193s I .2,115,247'- 'A UNITED STATES lPATENT oFFlcE mw? EL? v,sZI am This invention relates to an improved valve between the fully open andfully closed positions structure. It is concerned more particularly with determined by said stops.

a valve. of the socalled,rotary disc" type, par- The invention wil1be'more particularly de.A ticularly adapted for use in a system through scribed by reference to the accompanying drawwhich fluids containing suspended solids (e. g., ing, wherein, 5'

relatively low-density pulp stocks) are forced Fig. 1 is a central vertical section through a under pressure, although the utility of the. strucvalve embodying the invention, ture of the presentinvention'cis not restricted to Fig. 2 is a sectional view taken on the linev 2-2 such speciilc application. of Fig. 1, andl v l0 In the transport of uid pulps by pipe lines Fig. 3 is a horizontal sectional view taken on l0 including valve units it heretofore has been a the line 34 of Fig. 1.

common diillculty tomalntain the expected func- The valve embodying the invention comprise tioning of the valves, 'in such lines, due to lodga body l provided with end anges 8 by which it ing ot solidsvin the valve structures. is secured to adjacent ends of pipes (not shown) i6 It is an object of the present invention to proln the pipe line in which it ls lto function and l5 vide an improved valve structure capable of funchaving an inlet Passage 'l and an outlet passage tioning in proper manner in the transposition I. `Between the passages land 8 the body is of fluids containing suspended solids, e. g., relaformed with a circular recess 9 having an uptivelycoarse solids. Another object of the instanding surrounding wall I0.

vention is the provision of a valve structure, op- A valve seat in the form of a circular disc II 0 erable in connection'with low-density pulp, which seated in the recess 9 is provided with a.' subis easy to assemble and to dismantle. stantially semi-circular opening I2 in register The above, and other, objects have been realwith the inlet passage 1. The valve seat is held ized ln the valve structure of the present invenin place'in the recess 9 by a post or spindle I3 tion. In the latter, the valve disc is'functionally which has a reduced end. portion I4 passing 25 integral with a hollow valve stem, the valve disc through a concentric opening I5 in the valve seat' and stembeing capable oi' both rotary and,A to a and threaded into the valve -body- The reduced limited extent, reciprocatory movement about end portion Il terminates in a shoulder vI6 which ,and along the longitudinal axis of a cylindrical engages the upper surface of the .seat II. A'pin stud ilxedly mounted in the body of the struc- I1 or other suitable means may alsobe provided 30 ture, which stud serves tolocate and hold in said to positively lock the seat II against accidental body the disc-shaped valve seat.` The valve stem, turning movement. and hence the valve disc, is pressed toward the A rotatable valve disc I3 having a substantially co-operatlng-valve seat by means of a. compressemi-circular opening 'I9 corresponding in size sion spring mounted on the stud, adjacent the to the opening in\ the seat II and adapted to outer end thereof, the degree of pressure of said be brought into and out of registry therewith `by spring against said stem being variable at will. turning of the disc I8 is disposedin therecess 9 In each of the valve discs and co-operating valve and seated upon the valve seat II. 'Ihis valve seats is an opening substantially semi-circular in disc I3 is formed with an integral axially dis- 40 i'orm, the openings' being registrable. The pasposed tubular stem 20 which is`rotatable on the 40 sageways of the valve structure, including said post I3 and which is provided at its upper end registrable openings, preferably are atleast as with a hand wheel 2| rigidly mounted thereon. large. -in cross-sectional area as is the' pipe or The upper end of the post I3 extendsfbeyondthe conduit with which the valve. structure is deupper end of the hollow stem I9 and a coiled signed to co-operate, and they are so designed spring 22 surrounding said post is confined be- 45 as not to provide any ledges or projections for tween theupper end of said stem and an adjust- .lodgment of solids. There may be aillxed to the ing nut 23 which is threaded on the upper end valve stem a projection in the form oi' an indioi' the post. A lock nut 24 is also provided for catorl cooperating with stops on the exterior of securing the adjusting nut 23 in place. The

the valve gland for limiting the extent of 'rotaspring 22 serves to retain vthe valve disc on its 50 tion of the stem and'valve disc: in such case 7seat, andvin order to facilitate turning of the the exterior lof the valve gland may, and prefvalve stem, suitable bearing'washers 2l' are proerably does, bear indicia significant of the relavided-between the'upper end of the stem and the tive position of the opening in the valve disc with 1 springs. 4

respect to vthat of the opening inthe valve seat, A cap plate 25 having a central jopening for 55 the passage of the valve stem IS andpost or spindle I3 closes the opening 26 in the valve body and a packing gland 21` surrounding the.

Valve stem is secured to said cap plate by bolts 28. For the purpose of providing an indication as to the position of the .opening in the valve disc relative to the opening in the seat, an index pointer 29 is mounted on the stem 20 and cooperating markings are provided on the upperf flat surface of the gland 21. Suitable stops 30 and 3i areprovided for engagement by said pointer at the fully open and closed position of ,the valve.

The'cross sectional area of the passages 1 anda stoppage of the passages and thus causes great inconvenience.

Another importantfeaturevof my valve, particularly` when handling suspended solids. is that the valve disc is capable of axial as well as'r'otary movement'with respect to-its seat. In,the event that solid particles work between the valve seatA and disc so as tointerfere with the closing of the valve, it is merely necessary for th'e operator to give an axial pull on the hand'wheel 2|, thus lifting the from itsseat and flushing out the entrappedY solids.

` While aj preferred embodiment of the inven vtion ,has ,been shown forl purposes of illustration, it'will be understood' that various .changes in the detailsof construction may be resorted toA without' departing :from the spirit of the inventlon within the scope of the appended claims.

1. A valve comprising a body having a circular recess formedv therein, a valve seat in the form of a removable aperturedl disc mounted in said recess, an upstan'ding spindle element having an end thereof extending through said seat and threaded into said body, said spindle having a shoulder engaging the surface of said.v valve seat to secure itin position in said recess, a rotatable valve discdisposed on 'said seat, said valve disc having an upstanding hollow stern journalled on said spindle, and a handle member on said stem for operating said valve.

2. A valve structure as deflned in claim l, in which the valve disc and hollow stem are mounted for both rotary and axial movement, and a compression spring mounted on said spindle adjacent the end thereof remote from the valve seat and held in compression between said hollow st em and Aan adjustable stop onnsaid spindle, whereby said valve disc may be lifted oil of its seat by exerting an axial ,pull on said handle in order to-fiush out solids entrapped between said valve and seat.

3. In a valve -for handling iiuids having solid l matter suspended therein, a body having a passage extending therethroughof substantially- I equal cross sectional area from end to Lnd thereoi', said body having: 'a circular recess formed therein, a valve seat in the form of a removable apertured disc mounted in' said recess. an upstandi-ng spindle element having an end thereof extending through said seat and threaded into said body, said spindle havin'g a shoulder engaging the surface of said valve seat to secure it in position -in said recess, a rotatable apertured valve disc disposed on said seat, said valve disc,

having an upstanding hollow stem journalled on said spindle, and a handle member on said stem4 for operating said valve, the apertures in said lseat and valve disc having a cross sectional area as large as said passage through the valve body.

' MARVIND. BELLINGER. 

